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本文在全球价值链的基础上考虑国内价值链,首次构建一国内部地区出口增加值的分解框架,并据此框架进行中国省级出口的增加值分解及应用研究。结果表明:(1)各省出口价值来源中,本地增加值份额最高,回流增加值份额最低,国内垂直专业化份额和国际垂直专业化份额居中;各省经济发展水平和本地增加值份额及国际垂直专业化份额分别呈很强的负相关和正相关关系。(2)以增加值出口衡量的各省出口差距明显缩小;具有比较优势的省份-产业往往也更有优势为其他省份提供出口增加值;中国出口的低本地增加值率主要源于沿海省份制造业的增加值出口和总值出口之比较低。(3)以增加值出口和以总值出口衡量的显性比较优势呈现差异,对于许多省份-产业而言,比较优势甚至发生了逆转;对于大部分省份而言,以增加值出口衡量的出口专业化程度要低于以总值出口衡量的出口专业化程度。
Based on the global value chain, this paper considers the domestic value chain, and for the first time constructs a decomposition framework for the value-added of the export of a country within a country. Based on this framework, the value-added decomposition and application of China’s provincial exports are studied. The results show that: (1) Among the sources of export value in each province, the share of local added value is the highest, the share of return added value is the lowest, and the share of domestic vertical specialization and international vertical specialization is the highest among all the provinces. The share of economic development and local added value and the international vertical specialty The shares have strong negative correlation and positive correlation respectively. (2) The export gap between provinces marked by value-added exports has obviously narrowed. Provinces with comparative advantages - industries tend to be more advantaged in providing export value-added to other provinces. The low value-added rate of Chinese exports mainly comes from the manufacturing of coastal provinces The ratio of value added exports to total value exports is relatively low. (3) Differences in both the value-added exports and the dominant comparative advantages measured in terms of value exports have even reversed the comparative advantage for many provinces - industries; for most provinces exports measured by value-added exports The degree of specialization is lower than the degree of export specialization measured by total value exports.